3208021 has 2 divisors, whose sum is σ = 3208022. Its totient is φ = 3208020.

The previous prime is 3208013. The next prime is 3208039. The reversal of 3208021 is 1208023.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3189796 + 18225 = 1786^2 + 135^2 .

It is an emirp because it is prime and its reverse (1208023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3208021 - 2³ = 3208013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3207986 and 3208004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3208001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1604010 + 1604011.

It is an arithmetic number, because the mean of its divisors is an integer number (1604011).

Almost surely, 2^3208021 is an apocalyptic number.

It is an amenable number.

3208021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3208021 is an equidigital number, since it uses as much as digits as its factorization.

3208021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 3208021 is about 1791.0949165245. The cubic root of 3208021 is about 147.4842806192.

The spelling of 3208021 in words is "three million, two hundred eight thousand, twenty-one".